History of the Casio Watch

Solar Power

Released in 2001, the WVA-300 succeeded in becoming the worlds first radio-controlled watch that never needed to be reset, and was powered by a solar cell. The watch shattered the common sense of the industry, which had believed it was not possible to build an advanced-function watch using solar cells. This ultimate watch never stops and never needs to be reset, and features low power consumption and miniaturization enabled by technological developments such as an energy-saving CPU based on a SOI (silicon on insulator) format, and a super-miniature detection IC